In this post we discuss an enhanced transformerles power supply circuit design which consists a well stabilized and regulated DC stage along with a relay driver stage which operates through […]
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Bicycle Dynamo Battery Charger Circuit
The post explains a simple constant current bicycle dynamo battery charger circuit which can be used for charging a Li-Ion or Ni-Cd battery from a bicycle dynamo electricity source. The […]
Dual Battery Charger Circuit with Isolator
The post explores an innovative automatic dual battery charger with isolator circuit for alternators and engines, which allows monitoring of the charge levels of two individual batteries, and switching them […]
10 Simple LED Chaser Circuits Explained [Knight Rider, Scanner, Reverse-Forward, Cascaded]
The article discusses the construction of 10 interesting yet simple LED chaser circuits, which not only create beautiful running light effect but are also easy to build. We also discuss […]
Low Battery Indicator Circuit Using Two Transistors Only
The following post describes a simple low battery indicator circuit by using just two inexpensive NPN transistors. The main feature of this circuit is its very low stand by current […]
3 Simple DC UPS Circuits for Modem/Router
In the following article we discuss 3 useful DC to DC uninterruptible power supply circuits or DC UPS circuits for low DC to DC uninterruptible power applications The first idea below […]